United States, Minnesota, Saint Louis, Superior National Forest. Superior National Forest. Growing in St. Louis River...Easting: 567,141 Northing: 5,254,960 T 57N R 14W Sec SW3. 057N 14W 3
Growing in [river], in water of approximately 2 in. depth. In full sun in slow-moving water. Associate species include Dulichium arundinaceum, Sagittaria latifolia, Acorus calamus, Scirpus atrovirens, and Nymphaea odorata.